/Engine/Source/Runtime/Engine/Classes/Kismet/KismetMathLibrary.h
Returns min of all array entries and the index at which it was found. Returns value of 0 and index of -1 if the supplied array is empty.
static void MinOfByteArray ( const [TArray](API\Runtime\Core\Containers\TArray)< uint8 > & ByteArray, int32 & IndexOfMinValue, uint8 & MinValue )